<template>
  <el-form ref="deptForm" :model="form" :rules="formRules" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option
          v-for="item in list"
          :key="item.id"
          :value="item.username"
          :label="item.username"
        />
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { getEmployeeSimple } from '@/api/employees'
import { addDepartment, aboutDepartments, updateDepartments } from '@/api/departments'
export default {
  props: {
    originList: {
      type: Array,
      required: true
    },
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    }

  },
  data() {
    // 定义一个校验规则函数,教研部门的编码的唯一性
    const validCode = (rule, value, callback) => {
      // 验证用户输入的value值
      // console.log('this.corignList', this.originList)
      let existCodeList = this.originList.map(item => item.code)
      // console.log('existCodeList', existCodeList)
      // 如果是编辑的状态,将当前编辑的部门的编码从存在的数组中移除,然后再判断
      if (this.isEdit) {
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      // 判断当前value值 , 是否在数组中存在
      if (existCodeList.includes(value)) {
        // 存在则校验失败
        callback(new Error(`该部门编码${value}已存在,请更换一个编码`))
      } else {
        // 不存在,验证通过
        callback()
      }
    }
    const validName = (rule, value, callback) => {
      let existNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      console.log('existNameList', existNameList)
      // 编辑时我兄弟的处理
      if (this.isEdit) {
        // 只能获取到当前的部门的id, 获取当前编辑部门的pid
        const pid = this.originList.find(item => item.id === this.id).pid
        // 通过pid去所有的部门数据中找当前编辑部门的所有兄弟
        const brother = this.originList.filter(item => item.pid === pid)
        // 排除自己
        existNameList = brother.filter(item => item.id !== this.id).map(item => item.name)
      }
      if (existNameList.includes(value)) {
        callback(new Error(`该部门名称${value}已经存在,不能重复!`))
      } else {
        callback()
      }
    }

    return {
      // 存储部门负责人列表
      list: [],
      // 收集表单数据对象
      form: {
        name: '',
        code: '',
        manager: '',
        introduce: ''
      },
      formRules: {
        name: [
          { required: true, message: '请输入部门名称', trigger: 'blur' },
          { min: 3, max: 50, message: '请输入1~50的部门名称', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入部门编码', trigger: 'blur' },
          { min: 3, max: 50, message: '请输入1~50的部门编码', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '请输入部门负责人', trigger: 'blur' }
        ],
        introduce: [
          { required: true, message: '请输入部门介绍', trigger: 'blur' },
          { min: 3, max: 50, message: '请输入1~30字的部门介绍', trigger: 'blur' }
        ]
      }
    }
  },
  watch: {
    // 方法三 : // 侦听组件内props中属性或者data函数中属性的变化
    // id: function(newval, oldval) {
    //   console.log('newval,', newval)
    //   console.log('oldval', oldval)
    //   // 解决数据不更新的方法
    //   this.aboutDepartmentDols()
    // }
    // id: {
    //   handler(newval, oldval) {
    //     console.log('newval,', newval)
    //     console.log('oldval', oldval)
    //   },
    //   immediate: true
    // }
  },
  created() {
    this.loadEmployeeSimple()
    if (this.isEdit) {
      this.aboutDepartmentDols()
    }
  },
  methods: {
    // 在子组件中定义重置表单的方法 resetFields 重置整个表单
    resetForm() {
      this.$refs.deptForm.resetFields()
      this.form = {
        name: '',
        code: '',
        manager: '',
        introduce: ''
      }
    },
    //  实现编辑部门
    async  doEidt() {
      try {
        await updateDepartments(this.form)
        // 重新渲染
        // 关闭弹框
        this.$emit('situolasi')
      } catch (error) {
        console.log(error)
      }
    },
    async aboutDepartmentDols() {
      try {
        const res = await aboutDepartments(this.id)
        console.log(res)
        this.form = res.data
      } catch (error) {
        console.log(error)
      }
    },
    async  loadEmployeeSimple() {
      try {
        const res = await getEmployeeSimple()
        console.log(res)
        this.list = res.data
      } catch (error) {
        console.log(error)
      }
    },
    // 封装一个 实现添加功能的方法
    async doAdd() {
      try {
        // this.form中却扫pid,获取到pid
        const res = await addDepartment({ pid: this.id, ...this.form })
        console.log('addDepartment', res)
        // 重新渲染
        // 关闭弹层
        // 子传父~
        this.$emit('situolasi')
      } catch (error) {
        console.log(error)
      }
    },

    hSubmit() {
      this.$refs.deptForm.validate((valid) => {
        // 取反,验证失败直接结束
        if (!valid) return

        this.isEdit ? '编辑' : '新增操作'
        this.isEdit ? this.doEidt() : this.doAdd()
        this.$message.success('恭喜您添加成功')
      })
    },
    hCancel() {
      // 关闭弹层 --- >父组件
      this.$emit('close')
    }
  }
}
</script>

<style>

</style>
